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Pub. No.:    WO/2001/027209    International Application No.:    PCT/GB2000/003985
Publication Date: 19.04.2001 International Filing Date: 16.10.2000
Chapter 2 Demand Filed:    27.02.2001    
A61L 27/34 (2006.01), A61L 33/06 (2006.01), C08L 33/00 (2006.01), C08L 33/14 (2006.01)
Applicants: BIOCOMPATIBLES LIMITED [GB/GB]; Chapman House, Farnham Business Park, Weydon Lane, Farnham, Surrey GU9 8QL (GB) (For All Designated States Except US).
DAVIES, Martyn, Christopher [GB/GB]; (GB) (For US Only).
CLARKE, Stuart [GB/GB]; (GB) (For US Only).
LEWIS, Andrew, Lennard [GB/GB]; (GB) (For US Only)
Inventors: DAVIES, Martyn, Christopher; (GB).
CLARKE, Stuart; (GB).
LEWIS, Andrew, Lennard; (GB)
Agent: GILL JENNINGS & EVERY; Broadgate House, 7 Eldon Street, London EC2M 7LH (GB)
Priority Data:
9924502.9 15.10.1999 GB
Abstract: front page image
(EN)A polymer blend for use in a biomedical application comprising: (A) a polymer A, bearing zwitterionic pendant groups; and (B) a hydrophobic addition polymer B, selected from the group consisting silyl(alk)acrylates, alkyl(alk)acrylamides, dialkyl(alk)acrylamides, and alkyl(alk)acrylate polymers, wherein the structure of the blend exhibits phase separation forming a micro-phase segregated structure at a surface. Articles, methods of production and liquid blend compositions are also disclosed. Preferably A is a copolymer of 15 to 30 mole % 2-methacryloyloxyethyl-2'-trimethylammonium ethyl phosphate inner salt and 85 to 70 mole % of a C¿6-18? alkyl methacrylate, and B is a homopolymer of a C¿4-18? alkyl(meth)acrylate, blended in weight proportions of 1:1 to 1:50.
(FR)Alliage de polymères destiné à une application biomédicale qui comprend: (A) un polymère A, porteurs de groupes latéraux zwittérioniques; and (B) un polymère B d'addition hydrophobe, choisi dans le groupe composé de polymères silyl(alk)acrylates, alkyl(alk)acrylamides, dialkyl(alk)acrylamides, et alkyl(alk)acrylate, la structure de l'alliage présentant une séparation de phase formant une structure séparée de micro-phase sur une surface. L'invention concerne également des articles, des procédés de fabrication et des compositions liquides d'alliages. De préférence, A représente un copolymère comportant de 15 à 30 mole % du sel interne 2-méthacryloxyéthyl-2'-triméthylammonium éthyl phosphate et 85 à 70 mole % d'un méthacrylate d'alkyle C¿6-18?, et B représente un homopolymère d'un (méth)acrylate d'alkyle C¿4-18?, mélangés en proportions pondérales comprises entre 1:1 et 1:50.
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, BZ, CA, CH, CN, CR, CU, CZ, DE, DK, DM, DZ, EE, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, TZ, UA, UG, US, UZ, VN, YU, ZA, ZW.
African Regional Intellectual Property Organization (GH, GM, KE, LS, MW, MZ, SD, SL, SZ, TZ, UG, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)